<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter=20>
        <el-col :span="7">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisble = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="Id"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">
            </el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeUserById(scope.row.id)">
            </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog @close="addDialogClosed" title="添加用户" :visible.sync="addDialogVisble" width="50%"
      :close-on-click-modal="false">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" show-password></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email" type="email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisble = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog @close="editDialogClosed" title="修改用户信息" :visible.sync="editDialogVisble" width="50%"
      :close-on-click-modal="false">
      <!-- 内容主体区域 -->
      <el-form ref="deitFormRef" :model="editForm" label-width="80px" :rules="editFormRules">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" :disabled="true">
          </el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email">
          </el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile">
          </el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisble = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisble" width="50%" @close='setRoleDialogClosed'>
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的名称:{{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisble = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,})$/
      if (regEmail.test(value))
        // 合法的邮箱
        return cb()
      cb(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/
      if (regMobile.test(value))
        //合法的手机号
        return cb()
      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 5
      },
      // 用户列表 
      userList: [],
      // 总数据条数
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisble: false,
      // 控制修改用户对话框的显示与隐藏
      editDialogVisble: false,
      // 添加用户的表单数据
      addForm: {
        usernmae: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 查询到的用户的信息对象
      editForm: {},
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3-10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 10, message: '密码的长度在3-10个字符之间', trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ]
      },
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制角色对话框的显示与隐藏
      setRoleDialogVisble: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已经选中的角色id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users',
        { params: this.queryInfo })
      if (res.meta.status != 200) return this.$Message({
        type: 'error',
        message: '获取用户列表失败!',
        center: true
      })
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      // 重新请求数据
      this.getUserList()
    },
    // 监听 页码值 改变的时间
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      // 重新请求数据
      this.getUserList()
    },
    // 监听 Switch 开关状态的改变
    async userStateChanged(userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status != 200) {
        // 重置状态
        userinfo.mg_state = !userinfo.mg_state
        return this.$Message.error('更新用户状态失败')
      }
      this.$Message.success('更新用户状态成功')

    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮,添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status != 201) return this.$Message.error('添加用户失败')
        this.$Message.success('添加用户成功!')
        // 隐藏添加用户的对话框
        this.addDialogVisble = false;
        // 刷新用户列表
        this.getUserList();
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      //   console.log(id);
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status != 200) return this.$Message.error('查询用户信息失败!')
      this.editForm = res.data
      this.editDialogVisble = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.deitFormRef.resetFields()
    },
    // 点击按钮,修改用户
    editUser() {
      this.$refs.deitFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('/users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status != 200) return this.$Message.error('更新用户信息失败')
        // 关闭对话框
        this.editDialogVisble = false;
        // 刷新数据列表
        this.getUserList()
        // 提示修改成功
        this.$Message.success('更新用户信息成功!')
      })
    },
    // 根据id删除对应的用户信息
    async removeUserById(id) {
      //   console.log(id);
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        return err
      })
      // 如果用户确认删除 则返回值为字符串 confirm
      // 如果用户取消了删除 则返回字符串 cancel
      //   console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$Message.info('已取消删除')
      }
      // 发送请求,删除用户信息
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status != 200) return this.$Message.error('删除失败')

      // 删除成功
      this.$Message.success('删除用户成功!')
      this.getUserList()

    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前 获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$Message.error('获取角色列表失败')

      this.rolesList = res.data;
      this.setRoleDialogVisble = true
    },
    // 点击按钮 分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId)
        return this.$Message.error('请选择要分配的角色')

      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) return this.$Message.error('更新角色失败')

      this.$Message.success('更新角色成功')
      this.getUserList();
      this.setRoleDialogVisble = false;
    },
    // 监听分配角色对话框的关闭事件 
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = ''
    }

  }

}
</script>

<style lang="less" scoped>
.el-table {
  margin-top: 15px;
  margin-bottom: 15px;
}
</style>